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eyes
studing for the staion we have on december the 18,2008
9
Science
6th Grade
12/15/2008

Additional Science Flashcards

 


 

Cards

Term
Cornea[image]
Definition

  

 

The clear part of the eye's focuing

    system located at the frount of the eye.

   It refracts light+protects the eye.

Term
Fovea[image]
Definition

      

 

 

           The center of the macula and gives          the sharpest vision.

Term

Iris[image]

Definition

        

    

     The colored part of the eye that regulates      the amount of light entering the eye. Countrols the size of the pupil.

Term

Lens[image]

Definition

      

    A clear part of the eye behind the iris.

     That helps to focus loght or an image,

      on the retina.

Term
Macula[image]
Definition

        

      The small sesitive area of the retina that    gives central vision. It is located in

the center of the retina and contains

the fovea, gives central vision.

Term
Optic nerve[image]
Definition

 

      A bundle of more than one million nerve

      fibers that carries visual messages and inpulses from retina to the brain

Term

Pupil[image]

Definition

 

The opening of the at the center of

the iris. The iris adjusts the

center of the pupil and controls the amount

of light that canenter (passes light).

Term
Retina[image]
Definition

 

 

The light-sensitive tissue lining

at the back of the eye. The retina in the

human eye helps to produce an image

and converts it into nerve signals.

Term
Vitreous gel[image]
Definition

 

A clear gel that fills the inside

of the eye. Gives a structural support

 + is a medium for light reaching the retina.

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